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Margarita [4]
3 years ago
11

What are facts about triangles in geometry?

Mathematics
1 answer:
Natasha2012 [34]3 years ago
6 0

Answer:

They have three sides.

Step-by-step explanation:

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Aleksandr-060686 [28]

Answer:

C

Step-by-step explanation:

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3 years ago
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Pani-rosa [81]

Answer:

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8 0
3 years ago
The brain volumes ​(cm cubed​) of 20 brains have a mean of 1162.8 cm cubed and a standard deviation of 127.1 cm cubed. Use the g
Free_Kalibri [48]

Answer:

- The limits are  908.6 cm^3 and 1417cm^3

- 1337.0cm^3 is in between the limits

Step-by-step explanation:

To determine the limit by taking into account the range rule of thumb, you use the fact that the limits are given by the mean plus and minus twice the standard deviation, that is:

\overline{x}\pm 2\sigma        (1)

\overline{x}: mean of brain volume = 1162.8 cm^3

σ: standard deviation = 127.1 cm^3

You replace the values of the parameters in the equation (1):

1162.8cm^3+2(127.1cm^3)=1417cm^3\\\\1162.8cm^3-2(127.1cm^3)=908.6cm^3

Limits = (1417 , 908.6)

The limits are  908.6 cm^3 and 1417cm^3

1337.0cm^3 is in between the limits calculated above.

5 0
3 years ago
Find the coordinates of point b on ac such that the ratio of AB to BC is 2:1
riadik2000 [5.3K]

Answer:

(-2, 3)

Step-by-step explanation:

the point B is

B(x,y)

x

AB (A to B) is twice BC ( B to C )

AB is 2 - x. BC is x - (-4)= x + 4

So

2-x=2 (x + 4)

2-x=2x + 8

3x = -6

x = -2

y

(Same logic as above)

AB is -5 -y. BC is u - 7

-5 -y = 2(y - 7)

-5 - y = 2y - 14

3y = 9

y= 3

the point is (-2, 3)

5 0
3 years ago
Two​ trains, Train A and Train​ B, weigh a total of 526 tons. Train A is heavier than Train B. The difference of their weights i
riadik2000 [5.3K]

Answer:

Train A = 466

Train B = 60

Step-by-step explanation:

3 0
2 years ago
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